In 1788, when Britain acquired Australia as part of the Empire and established a colony, it gained a number of benefits, although Australia did not offer quite the rewards that Britain hoped for:
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Because Australia was a part of the British Empire. Because Australia was a part of the British Empire
Australia was once a colony of Great Britain.
Because Australia was still technically part of the British Empire ( a Dominion) and was bound by an alliance that required it to participate in wars which involved its "sovereign" country( in this case Britain).
Nothing but years of snobbery and elitism and a series of tragic social problems to deal with
Australia had no choice but to declare war on Germany in 1914. Australia was a dominion of the British Empire, and Britain's declaration of war on Germany was binding to all of its dominions.
The British Empire did not exchange kangaroos for anything in Australia.
Because Australia was a part of the British Empire, and did not have its own independent foreign policy. Australia's foreign policy was set by the British government, so when the British government declared war, Australia considered itself automatically at war. Even though the Australian government did not make the decision, it still strongly supported Britain. Australians thought of themselves as citizens of the British Empire, and thought that the security of the Empire was important for Australia's own security. Therefore they were happy to challenge Germany when it was viewed as a threat to the Empire.
Great Britain originally colonised and governed Australia.
It is the Northern Americas which Britain occupied the most.
Australia did not 'join' the British Empire, the British was the first westerners who set foot on Australia. They stuck the Union Jack down, and claimed Australia as theirs.
Because it was part of the British Empire.